What kind of noise?
thumpata thumpata thumpata
whomp whomp whomp
ding ding ding
crunch crunch crunch
Usually I hear this kind of thing from my wife, not when she gets home from work but usually when I am in bed half asleep - "Oh, I forgot to tell you, the car's making a funny noise! Goodnight"
Gas of diesel engine? Is the sound coming from the waterlift muffler, the rudder, transmission or maybe the
exhaust system? Could be the cutlass, very rhythmic dull knocking sound.